Machine for sharpening razor-blades.



E. I. BAINS. iMACHINE POR SHARPBNING RAZOR BLADES.

APPLICATION FILED MAYL, 1910.

988,285.' Patented Mar.28,1911.

2` SHEETS-SHEET l,

E. 1'. BAINS. MACHINE PQR SHARPBNING RAZOR BLADES.

APPLICATION FILED MAY 4, v1910.

4 Patented Mar. 28,1911.

2 SHEETS-SHEET 2.

(85 'ift/mense@ t 257W WW are secured to the head 72. In Figs. l and 2the head b is shown as having a flat npper surface so that the blade isheld flat. 'It may have, however, any other suitable form, such as aconcave form, as in the head b2 shown in Fig. 3. A

In the machine shown in Figs. l and 2 the sharpening rolls are mountedin fixed bearings in the frame c. It may be desirable in some bases to.provide for adjustment of the .sharpening rolls toward 'and from eachother. =A construction which permits. such adjustment is shown in'Figs.and 5, in

which the shafts g, g', are mounted in journal boxes e3 which aremovable toward and .and `from each other by a right and left threadedscrew shaft le, provided with a milled turning disk 7c', and may be heldin proper position in the frame e2 by adjusting screws czpthreaded inthe ends of the frame.

notwithstanding their adjustment toward and from each other, each gearg3 and g4, indicated only by the pitch lines in Fig.l 4,

` meshes with a corresponding gear gf and g, each of the gears g5 and gbeing carried by a stud 97,. g8, projecting from a bar gn, glo, hung atits upper end upon the corresponding shaft g, g. The two bars areslotted at their lower ends, as at g, and, being overlapped, areconnected bya clamping screw 912. The two gears gl5 and g6 are held inmesh with each other, notwithstanding adjustment toward and from eachother of the gears g3 and g* with which they are respectively. in meshlthrough relative' adjustment of the lower ends of the bars g and glo,the clamping screw 91.2 bein loosened for the purpose and then set uptightly.

The machine shown in Fig. 5 is adapted for sharpening of a blade havingbut one edge, sucli as an ordinary razor blade indicated at z". The headb is suitably formed to support the blade and the gear through which theroll f is otherwise drive'n from the roll f is'dispensed with.

If it be desired to give the sharpening rolls a longitudinal movement aswell as a rotary movement, the iframe es is somewhat-elongated, as shownin Fig. 7, andthe shafts g andv g mounted therein are provided each witha spline g* which engages a longitudinal groove f* formed in the -sleevelining j" of the corresponding roll f or f as the case may be, and theroll has secured thereto at one end a hub f5 with an inclined groove f@engaged by a pin e on the frame e5. lnTherel'o're, as the sharpeningrolls are rotated they receive at the-same time a longitudinalreciprocating movement.

in Figs. 6-9, has its edges cut away somewhat so as to leave4 the edgesof the blade free, as clearly shown in Figs. 6-8, and the blade z', ifit is provided with holes, as is sometimes the case, may be secured tothe head b2 by screws Vor pins b3 which pass through the holes in theblade into the head.

kA desirable form of sharpening roll is shown in Figs. 10 and 11, inwhich the body j" of the roll is formed with spirally disposed,dove-tailed rooves f8 in which are placedstrips f" of4 material.

If it is thought necessary -to fasten the hinged frame e down upon theframe a a `spring latch a2 may be secured to the frame a and' adapted toengage a hooked 'stud a3 `o n the frame e.

details of construction and arrangement without departing from thespirit of the invention, which is noty limited to the preciseconstruction and arrangement shown;

' I' claim as my invention:

and the like, comprising a sharpenlng roll, `means to rotate the same, asprin pressed blade support adapted to press t e blade yieldingly towardthe roll, and movable "bodily toward and from the roll, and guides inwhich said support is loosely guided.l

2. A machine for sharpening two-edged safety razor blades, comprising a,pair of sharpening rolls geared to rotate together, means to rotate therolls, a s ring-pressed surface substantially parallel with the planethe blade yieldingly toward the rolls with its edges in contacttherewith respectively, said support being movable bodily toward andfrom the rolls ,andV guides in which said support is loosely guided.

. 3. A machine for sharpening razor blades port mounted loosely andyieldingly in the base, a frame mounted 'movably on the base mounted inthe frame and means for rotating the sharpening roll, said support beingmovable bodily toward and from the roll.

4. A machine for sharpening razor blades and the like, comprising abase, a blade'support mounted loosely and yieldingly in the base, aframe mounted movably on the Vbase above the blade support, and a pairof sharpening rolls mounted in the frame and geared to rotate together,said support being movable bodily toward and from the rolls with `itssuppdrting surface substantially parallel with the plane oi the axes ofthe rolls.

5. A machine for sharpening razor biades eather or other suitableyVarious other changes may be made in l. A machine for sharpening razorblades blade support having its bla e-supporting' and the like,comprising a base, a blade sup The head b2 of the blade supporter, shownof thev axes of the rolls'aid adapted to press A above lthe bladesupport, a .sha-rpening'roll and the like, comprising a blade supportand sha-ft, a hub secured to the roll and having shanpening roll mountedto rotate and to an inclined groove, and a stud mounted 0n havelongitudinal movement, means to rothe frame and entering said groove.tate theroll, and means to cause the Vroll to This specification signedand witnessed 5 reciprocate longitudinally as it rotates. this 3d day'of May, A. D., 1910.

6. A machine for sharpening razor blades FLEAZER I RAINS and the like,comprising a blade support, a J

frame, a shaft mounted for rotation in the Signed in the presence of- Kframe, a sharpening roll mounted to rotate W. B. GREELEY, 10 with and tomove longitudinally upon the AMBROSE L. OSHEA.4

